Also of note, I'll be doing some study over the next many dates and adding a lot of content on the Wiki. I encourage you to challenge me in my findings, as a lot of will be best-effort assumptions based off available data. -Seabrook 07:00, 16 June 2011 (CEST)
Removed this section from the article: "Whether to do a StreetPass hit is probably determined based on if the other 3DS MAC+8byte Nintendo tag data pair was ever seen before.." as it's been observed that the MAC address and 8-byte StreetPass ID change every time the user enters and exits the Settings application, but if done on two StreetPasses, they won't tag again. However, a capture wasn't done at the time to see if they talk to each other, but a StreetPass doesn't occur either way. There must be some sort other identification in the Tag used by the 3DS. Feel free to re-add if anyone disagrees with the removal due to the evidence presented, or finds evidence refuting what I stated. --Seabrook 06:18, 16 June 2011 (CEST)
I do not think the StreetPass Data is stored on the SD Card at any time. I've done a diff of the card before and after getting a StreetPass and did not notice any differences. This was done with Mii Plaza StreetPass data with one returning StreetPass, and one New StreetPass.
That doesn't mean all StreetPass data is stored on NAND, especially for system software perhaps. Ridge Racer StreetPass data is stored on SD card. --Yellows8 00:00, 12 April 2011 (CEST)
"This frame also contains a custom Nintendo tag, it seems to contain unknown console unique data, since the contents of this tag from different 3ds captures don't match."
Does this change if the mii data associated with the 3DS unit or Streetpass is changed? --Jl12 14:12, 15 April 2011 (CEST)